The variation coefficient (VC) of NUE is higher than that of NAE under the N fertilizer applications.It is also showed that the contribution of NUE to NE is higher than that of NAE in oilseed rape.

• 无论供氮水平如何，氮素利用效率的变异系数均大于氮素吸收效率的变异系数，说明氮素利用效率对油菜氮效率差异的贡献大于氮素吸收效率。